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The other two species are in fact threatened, with P. nebulosus considered vulnerable to extinction and P. poireti classified as an endangered species. [2] The numbers of all three species are declining in the wild. Livestock agriculture is an ongoing major cause of habitat loss and degradation, and of water pollution, for all three species.
Notophthalmus meridionalis, the black-spotted newt or Texas newt, is a species of aquatic newt native to northeastern Mexico and southern Texas in the United States. [ 1 ] [ 2 ] This amphibian was put on the IUCN Red List of Endangered Species in 2008 with populations still decreasing.
The eastern newt (Notophthalmus viridescens) is a common newt of eastern North America.It frequents small lakes, ponds, and streams or nearby wet forests. The eastern newt produces tetrodotoxin, which makes the species unpalatable to predatory fish and crayfish. [3]
Although some species, such as the rough-skinned newt (Taricha granulosa) and Eastern newt (Notophthalmus viridescens) in North America or the smooth newt (Lissotriton vulgaris) in Europe, are still relatively common, populations of newts throughout their distribution range suffer from habitat loss, fragmentation, and pollution. This affects ...
Four species are categorized as endangered by the International Union for Conservation of Nature: the Barton Springs salamander, the Texas blind salamander, the black-spotted newt, and the Houston toad. Furthermore, Texas law protects several native amphibians, designating eleven species as threatened within the state and four others as endangered.
The rough-skinned newt (Taricha granulosa) uses tetrodotoxin and is considered the most poisonous species of newt. There are species and sub-species of Taricha that live in concurrent regions with a garter snake (Thamnophis) that has developed a resistance to the TTX poisoning. Species that inhabit regions with resistant Thamnophis snakes have ...
Endangered species by reason(s) they are (or were) threatened — the cause(s) for species being endangered in their native habitats.; This is primarily a sub-category for IUCN Red List species by the external threat(s) stated in IUCN reports for each listed species (hyperlinked under 'References' &/or 'External links' on most wikipedia articles when species are on IUCN Red List).
Palmate newt populations are not in decline overall, and the species has been assessed as Least Concern by the IUCN. [1] In France, it is the most common newt species, [10] but it is rare in Belgium and the Netherlands, [4]: 225 and populations are fragmented on the Iberian peninsula. [1] It is included in some national and regional red lists. [1]